Electrically conductive Pt-MOFs for acidic oxygen reduction: Optimized performance via altering conjugated ligands

Rashid Iqbal; Sajjad Ali; Adil Saleem; Muhammad K. Majeed; Arshad Hussain; Sajid Rauf; Abdul Rehman Akbar; Hu Xu; Liang Qiao; Wei Zhao

doi:10.1016/j.cej.2022.140799

Electrically conductive Pt-MOFs for acidic oxygen reduction: Optimized performance via altering conjugated ligands

Rashid Iqbal
, Sajjad Ali
, Adil Saleem
, Muhammad K. Majeed
, Arshad Hussain
, Sajid Rauf
, Abdul Rehman Akbar
, Hu Xu
, Liang Qiao
, Wei Zhao^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

Electrically conductive metal–organic frameworks (MOFs) for chemical energy storage have attracted tremendous interests recently. Here, we report Pt₃(C₁₂N₆O₆)₂ MOF, Pt₃(C₁₂N₉H₃O₃)₂ MOF, and Pt₃(C₁₂N₁₂H₆)₂ MOF with high conductivities of 885.5 S/m, 602.5 S/m, and 426.9 S/m, respectively, where the organic ligands and square-planar Pt ions are connected into two-dimensional (2D) MX₄ configuration. We attempted to employ these layer-stacked 2D Pt-MOFs as the cathode electrocatalyst for acidic oxygen reduction reaction (ORR) based on the research background of proton exchange membrane hydrogen fuel cells. The electronic structures of Pt-MOFs were altered by varying the coordinated ligand X to optimize the acidic ORR performance. Pt₃(C₁₂N₆O₆)₂ MOF shows the best performance, with a superior activity (E_1/2 = 0.836 V vs reversible hydrogen electrode (RHE) at 1600 r.p.m, n = 3.96, and j_L = 5.28 mA cm⁻²) and exceptional durability of up to 20,000 cycles for ORR in an acidic media with a pH of 0.29.

Original language	English
Article number	140799
Journal	Chemical Engineering Journal
Volume	455
DOIs	https://doi.org/10.1016/j.cej.2022.140799
State	Published - 1 Mar 2023
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2022 Elsevier B.V.

Keywords

Acidic Oxygen reduction
Electrocatalyst
Metal-Organic frameworks

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.cej.2022.140799

Cite this

@article{16b7b6756d9e4569a4553f2067078f9f,

title = "Electrically conductive Pt-MOFs for acidic oxygen reduction: Optimized performance via altering conjugated ligands",

abstract = "Electrically conductive metal–organic frameworks (MOFs) for chemical energy storage have attracted tremendous interests recently. Here, we report Pt3(C12N6O6)2 MOF, Pt3(C12N9H3O3)2 MOF, and Pt3(C12N12H6)2 MOF with high conductivities of 885.5 S/m, 602.5 S/m, and 426.9 S/m, respectively, where the organic ligands and square-planar Pt ions are connected into two-dimensional (2D) MX4 configuration. We attempted to employ these layer-stacked 2D Pt-MOFs as the cathode electrocatalyst for acidic oxygen reduction reaction (ORR) based on the research background of proton exchange membrane hydrogen fuel cells. The electronic structures of Pt-MOFs were altered by varying the coordinated ligand X to optimize the acidic ORR performance. Pt3(C12N6O6)2 MOF shows the best performance, with a superior activity (E1/2 = 0.836 V vs reversible hydrogen electrode (RHE) at 1600 r.p.m, n = 3.96, and jL = 5.28 mA cm−2) and exceptional durability of up to 20,000 cycles for ORR in an acidic media with a pH of 0.29.",

keywords = "Acidic Oxygen reduction, Electrocatalyst, Metal-Organic frameworks",

author = "Rashid Iqbal and Sajjad Ali and Adil Saleem and Majeed, \{Muhammad K.\} and Arshad Hussain and Sajid Rauf and \{Rehman Akbar\}, Abdul and Hu Xu and Liang Qiao and Wei Zhao",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2023",

month = mar,

day = "1",

doi = "10.1016/j.cej.2022.140799",

language = "English",

volume = "455",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Electrically conductive Pt-MOFs for acidic oxygen reduction

T2 - Optimized performance via altering conjugated ligands

AU - Iqbal, Rashid

AU - Ali, Sajjad

AU - Saleem, Adil

AU - Majeed, Muhammad K.

AU - Hussain, Arshad

AU - Rauf, Sajid

AU - Rehman Akbar, Abdul

AU - Xu, Hu

AU - Qiao, Liang

AU - Zhao, Wei

PY - 2023/3/1

Y1 - 2023/3/1

N2 - Electrically conductive metal–organic frameworks (MOFs) for chemical energy storage have attracted tremendous interests recently. Here, we report Pt3(C12N6O6)2 MOF, Pt3(C12N9H3O3)2 MOF, and Pt3(C12N12H6)2 MOF with high conductivities of 885.5 S/m, 602.5 S/m, and 426.9 S/m, respectively, where the organic ligands and square-planar Pt ions are connected into two-dimensional (2D) MX4 configuration. We attempted to employ these layer-stacked 2D Pt-MOFs as the cathode electrocatalyst for acidic oxygen reduction reaction (ORR) based on the research background of proton exchange membrane hydrogen fuel cells. The electronic structures of Pt-MOFs were altered by varying the coordinated ligand X to optimize the acidic ORR performance. Pt3(C12N6O6)2 MOF shows the best performance, with a superior activity (E1/2 = 0.836 V vs reversible hydrogen electrode (RHE) at 1600 r.p.m, n = 3.96, and jL = 5.28 mA cm−2) and exceptional durability of up to 20,000 cycles for ORR in an acidic media with a pH of 0.29.

AB - Electrically conductive metal–organic frameworks (MOFs) for chemical energy storage have attracted tremendous interests recently. Here, we report Pt3(C12N6O6)2 MOF, Pt3(C12N9H3O3)2 MOF, and Pt3(C12N12H6)2 MOF with high conductivities of 885.5 S/m, 602.5 S/m, and 426.9 S/m, respectively, where the organic ligands and square-planar Pt ions are connected into two-dimensional (2D) MX4 configuration. We attempted to employ these layer-stacked 2D Pt-MOFs as the cathode electrocatalyst for acidic oxygen reduction reaction (ORR) based on the research background of proton exchange membrane hydrogen fuel cells. The electronic structures of Pt-MOFs were altered by varying the coordinated ligand X to optimize the acidic ORR performance. Pt3(C12N6O6)2 MOF shows the best performance, with a superior activity (E1/2 = 0.836 V vs reversible hydrogen electrode (RHE) at 1600 r.p.m, n = 3.96, and jL = 5.28 mA cm−2) and exceptional durability of up to 20,000 cycles for ORR in an acidic media with a pH of 0.29.

KW - Acidic Oxygen reduction

KW - Electrocatalyst

KW - Metal-Organic frameworks

UR - https://www.scopus.com/pages/publications/85143690086

U2 - 10.1016/j.cej.2022.140799

DO - 10.1016/j.cej.2022.140799

M3 - Article

AN - SCOPUS:85143690086

SN - 1385-8947

VL - 455

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

M1 - 140799

ER -

Electrically conductive Pt-MOFs for acidic oxygen reduction: Optimized performance via altering conjugated ligands

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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